Results 241 to 250 of about 12,490 (287)

Cooperative Spectrum Sensing

2014
The main objective of this chapter is to provide a detailed technical insight into latest key aspects of cooperative spectrum sensing. We focus on fusion strategies, quantization enhancements, effect of imperfect reporting channel, cooperative spectrum sensing scheduling, and utilizing cooperatively sensed data via Radio Environment Map (REM).
H. Birkan Yilmaz, Salim Eryigit, Tuna Tugcu   +2 more
openaire   +1 more source

Cooperative Spectrum Sensing With Location Information

IEEE Transactions on Vehicular Technology, 2012
In this paper, we address the problem of cooperatively detecting a primary user (PU) among multiple cognitive users (CUs) when their location information is available at a CU base station. For fast detection, each CU reports a power estimate, based on one-snapshot observation of the radio environment, to the CU base station.
Ning Han, Hongbin Li 0001
openaire   +1 more source

Cooperative spectrum sensing in LTE networks

2014 IEEE 27th Canadian Conference on Electrical and Computer Engineering (CCECE), 2014
Expanding the new technologies such as Long Term Evolution (LTE) has caused spectrum scarcity. Spectrum sensing can help LTE find other available frequencies to use as secondary user. There are many solutions to enhance the spectrum sensing. In this paper, we are looking at frequency bands in TV broadcasting spectrum as a suitable candidate to be used ...
Gelareh Kokabian, Amir Esmailpour
openaire   +1 more source

Cooperative spectrum sensing with noncoherent transmission

2012 IEEE International Conference on Communications (ICC), 2012
The problem of decision fusion for cooperative spectrum sensing in cognitive radio networks is studied when noisy fading channels are present between the cognitive radios (CRs) and the fusion center (FC). The CRs perform spectrum sensing using energy detection and transmit their binary decisions to the FC for a final decision on the absence or presence
Simin Bokharaiee, Ha H. Nguyen 0001, Ed Shwedyk   +2 more
openaire   +1 more source

An energy-efficient cooperative spectrum sensing

2015 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom), 2015
In this work, the energy consumption in the cooperative spectrum sensing is analysed. The analysis also covers the detection quality assessment and the definition of the energy efficiency (EE) metric. It is shown how cooperation among the sensing nodes affects the EE and how relaying of sensing information and node selection influences the detection ...
Krzysztof Cichon, Hanna Bogucka
openaire   +1 more source

Sensor Selection for Cooperative Spectrum Sensing

2008 3rd IEEE Symposium on New Frontiers in Dynamic Spectrum Access Networks, 2008
This article considers spectrum-on-demand in a cellular system. A communication system that wants to access spectrum to which it does not own a license must perform spectrum sensing to identify spectrum opportunities, and to guarantee that it does not cause unacceptable interference to the license owner.
Selen Y., Tullberg H., Kronander J.
openaire   +1 more source

Detection of Misbehavior in Cooperative Spectrum Sensing

MILCOM 2013 - 2013 IEEE Military Communications Conference, 2013
The problem of cooperative spectrum sensing in the presence of multiple classes of honest and misbehaving cognitive radios (CRs) is investigated. The CRs transmit their binary decisions regarding the state of the channel to a fusion center (FC) which must classify the CRs and determine whether the channel is vacant of the primary user.
Erfan Soltanmohammadi, Mort Naraghi-Pour
openaire   +1 more source

Cooperative spectrum sensing with incremental relaying

Telecommunication Systems, 2019
In this article, we suggest a new Spectrum Sensing (SS) algorithm using Incremental Relaying (IR). In previous studies, the relays always cooperate in the SS process. However, sometimes the Signal to Noise Ratio (SNR) of the direct link between the Primary User (PU) and the Fusion Node (FN) is high and cooperation is not required.
Raed Alhamad, Hatem Boujemaa
openaire   +1 more source

Cooperative spectrum sensing with relay selection

Telecommunication Systems, 2017
In this paper, we evaluate the detection and false alarm probabilities for relay based spectrum sensing techniques using the energy detector. The communication process consists of two phases. In the first phase, the primary user P transmits and K relays listen.
Raed Alhamad, Hatem Boujemaa
openaire   +1 more source

Cooperative spectrum sensing with Slepian-Wolf coded cooperations

2012 IEEE International Conference on Communications (ICC), 2012
A new Slepian-Wolf coded cooperation scheme is proposed for a cognitive radio network with two secondary users (SUs) performing cooperative spectrum sensing through a fusion center (FC). The SUs sense the spectrum by measuring the energy statistics of the received signals.
Ning Sun 0006, Guoqing Zhou 0006, Jingxian Wu 0001   +2 more
openaire   +1 more source